RC's Performance offers JE Turbo pistons for the 2001-2004 and 2005-2008 GSXR 1000. These JE pistons feature 9.8:1 and 10.1:1 compression ratio, respectively and must be used with a special .060" head gasket. Rings are also included with the purchase of these pistons. (2005-2008 turbo pistons use Suzuki OEM rings, purchase with or without rings). 2001-2004 pistons include JE rings. Cylinder head studs are recommended as well as our heavy duty valve springs